WO2016074459A1

WO2016074459A1 - Fast charging method, power source adapter and mobile terminal

Info

Publication number: WO2016074459A1
Application number: PCT/CN2015/078905
Authority: WO
Inventors: 张加亮
Original assignee: 广东欧珀移动通信有限公司
Priority date: 2014-11-11
Filing date: 2015-05-13
Publication date: 2016-05-19
Also published as: US9985449B2; EP3220507A1; KR102135606B1; US20170237273A1; EP3220507B1; US10326291B2; EP3148039A4; CN105900312A; JP2017531984A; CN108667094A; EP3923443A1; EP3220507A4; CN108988415A; JP6475826B2; US10454288B2; CN106030962A; WO2016074160A1; CN108667094B; US20170149252A1; CN105900312B

Abstract

A fast charging method, a mobile terminal (300) and a power source adapter (400). The method comprises: sending, by a mobile terminal (300), a first instruction to a power source adapter (400) through a data line in a USB interface, the first instruction being used for instructing the power source adapter (400) to start a fast charging mode; and receiving, by the mobile terminal (300), a charging current corresponding to the fast charging mode from the power source adapter (400) so as to charge a battery in the mobile terminal (300). Instead of blindly increasing an output current to conduct fast charging, the power source adapter (400) conducts fast charging on the mobile terminal (300) using a fast charging mode after receiving a first instruction of the mobile terminal (300), thereby improving the security of the fast charging process.

Description

Fast charging method, power adapter and mobile terminal

Technical field

Embodiments of the present invention relate to the field of charging, and more particularly, to a fast charging method, a power adapter, and a mobile terminal

Background technique

At present, mobile terminals (such as smart phones) are increasingly favored by consumers, but mobile terminals consume a large amount of power and usually need to be charged frequently. As the battery capacity of the mobile terminal becomes higher and higher, the charging time becomes correspondingly longer. How to achieve fast charging needs to be solved.

In the prior art, in order to achieve the purpose of fast charging, the output current of the power adapter is directly increased without considering the bearing capacity of the mobile terminal, which may cause the mobile terminal to overheat or even burn out, thereby reducing the service life of the mobile terminal.

Summary of the invention

Embodiments of the present invention provide a fast charging method, a power adapter, and a mobile terminal to improve the security of the fast charging process.

In a first aspect, a fast charging method is provided, the method being applied to a mobile terminal, wherein the mobile terminal is connected to a power adapter through a USB interface, and a power line in the USB interface is used to charge the mobile terminal, A data line in the USB interface is used for communication between the power adapter and the mobile terminal, the mobile terminal supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging of the normal charging mode The method includes: the mobile terminal transmitting a first instruction to the power adapter through a data line in the USB interface, the first instruction being used to instruct the power adapter to turn on the fast charging mode; The mobile terminal receives a charging current corresponding to the fast charging mode from the power adapter to charge a battery in the mobile terminal.

With reference to the first aspect, in an implementation manner of the first aspect, before the mobile terminal receives a charging current corresponding to the fast charging mode from the power adapter, before charging the battery in the mobile terminal, The method further includes: the mobile terminal transmitting a second instruction to the power adapter through a data line in the USB interface, the second instruction being used to indicate a charging voltage corresponding to the fast charging mode.

In conjunction with the first aspect, or any one of the foregoing implementation manners, in another implementation manner of the first aspect, the mobile terminal receives, from the power adapter, a charging current corresponding to the fast charging mode, Before the charging of the battery in the mobile terminal, the method further includes: the mobile terminal sending a third instruction to the power adapter through a data line in the USB interface, the third instruction is used to indicate the fast charging mode Corresponding charging current.

In combination with the first aspect, or any one of the foregoing implementation manners, in another implementation manner of the first aspect, the method further includes: charging, by the power adapter, the mobile terminal by using the fast charging mode During the process, the mobile terminal sends a fourth command to the power adapter through a data line in the USB interface, the fourth command is used to indicate a current voltage of a battery in the mobile terminal, so that the power adapter Adjusting the charging current according to the current voltage of the battery, or determining whether the contact of the USB interface is abnormal according to the charging voltage of the power adapter and the current voltage of the battery.

In a second aspect, a fast charging method is provided, the method being applied to a power adapter, wherein the power adapter is connected to a mobile terminal through a USB interface, and a power line in the USB interface is used for the power adapter as the mobile terminal Charging, the data line in the USB interface is used for communication between the power adapter and the mobile terminal, the power adapter supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the normal a charging current of the charging mode, the method comprising: the power adapter receiving a first instruction sent by the mobile terminal through a data line in the USB interface, the first instruction being used to instruct the power adapter to turn on the a fast charging mode; the power adapter adjusts a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal.

With reference to the second aspect, in an implementation manner of the second aspect, before the power adapter adjusts the charging current to the charging current corresponding to the fast charging mode to charge the mobile terminal, the method further includes: The power adapter receives a second command sent by the mobile terminal by using a data line in the USB interface, and the second instruction is used to indicate a charging voltage corresponding to the fast charging mode.

In conjunction with the second aspect, or any one of the foregoing implementation manners, in another implementation manner of the second aspect, the power adapter adjusts a charging current to a charging current corresponding to the fast charging mode, Before the charging of the terminal, the method further includes: receiving, by the power adapter, a third instruction sent by the mobile terminal by using a data line in the USB interface, where the third instruction is used to indicate charging corresponding to the fast charging mode Current.

With reference to the second aspect, or any one of the foregoing implementation manners, in another implementation manner of the second aspect, the method further includes: charging, by the power adapter, the mobile terminal by using the fast charging mode Receiving, by the power adapter, the mobile terminal, by using a data line in the USB interface, to send a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; The current voltage of the battery in the mobile terminal adjusts the charging current.

In conjunction with the second aspect, or any one of the foregoing implementation manners, in another implementation manner of the second aspect, the power adapter adjusts a charging current according to a current voltage of a battery in the mobile terminal, including: The power adapter adjusts a charging current of the power adapter to a charging current value corresponding to a current voltage of the battery according to a current voltage of the battery and a corresponding relationship between a preset battery voltage value and a charging current value.

With reference to the second aspect, or any one of the foregoing implementation manners, in another implementation manner of the second aspect, the method further includes: charging, by the power adapter, the mobile terminal by using the fast charging mode Receiving, by the power adapter, the mobile terminal, by using a data line in the USB interface, to send a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; The charging voltage of the power adapter and the current voltage of the battery determine whether the contact of the USB interface is abnormal.

In a third aspect, a mobile terminal is provided, where the mobile terminal is connected to a power adapter through a USB interface, and a power line in the USB interface is used to charge the mobile terminal, and a data line in the USB interface is used for The power adapter communicates with the mobile terminal, the mobile terminal supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode, and the mobile terminal comprises: communication a unit, configured to send a first instruction to the power adapter through a data line in the USB interface, the first instruction is used to instruct the power adapter to turn on the fast charging mode; and a charging unit is configured to The power adapter receives the charging current corresponding to the fast charging mode to charge the battery in the mobile terminal.

In conjunction with the third aspect, in an implementation of the third aspect, the communication unit is further configured to send a second instruction to the power adapter by using a data line in the USB interface, where the second instruction is used to indicate The charging voltage corresponding to the fast charging mode.

In conjunction with the third aspect, or any one of the foregoing implementation manners, in another implementation manner of the third aspect, the communication unit is further configured to adapt to the power source by using a data line in the USB interface The device sends a third instruction, the third instruction is used to indicate a charging current corresponding to the fast charging mode.

In combination with the third aspect, or any one of the foregoing implementation manners, in another implementation manner of the third aspect, the communication unit is further configured to: use the fast charging mode to charge the mobile terminal in the power adapter Transmitting, by the data line in the USB interface, a fourth instruction to the power adapter, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal, so that the power adapter is configured according to the The current voltage of the battery adjusts the charging current, or determines whether the contact of the USB interface is abnormal according to the charging voltage of the power adapter and the current voltage of the battery.

According to a fourth aspect, a power adapter is connected to a mobile terminal through a USB interface, wherein a power line in the USB interface is used by the power adapter to charge the mobile terminal, and a data line in the USB interface Used for communication between the power adapter and the mobile terminal, the power adapter supporting a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode, the power adapter The communication unit is configured to receive, by using a data line in the USB interface, a first instruction sent by the mobile terminal, where the first instruction is used to instruct the power adapter to enable the fast charging mode; and a current adjustment unit, And charging the mobile terminal for adjusting a charging current to a charging current corresponding to the fast charging mode.

In conjunction with the fourth aspect, in an implementation manner of the fourth aspect, the communication unit is further configured to receive, by using a data line in the USB interface, a second instruction sent by the mobile terminal, where the second instruction is used by A charging voltage corresponding to the fast charging mode is indicated.

In conjunction with the fourth aspect, or any one of the foregoing implementation manners, in another implementation manner of the fourth aspect, the communication unit is further configured to receive, by using a data line in the USB interface, a And a third instruction, the third instruction is used to indicate a charging current corresponding to the fast charging mode.

In conjunction with the fourth aspect, or any one of the foregoing implementation manners, in another implementation manner of the fourth aspect, the communication unit is further configured to: use the fast charging mode to charge the mobile terminal in the power adapter Receiving, by the data line in the USB interface, the mobile terminal sends a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; the current adjustment unit is specifically used to The charging current is adjusted according to the current voltage of the battery in the mobile terminal.

In conjunction with the fourth aspect, or any one of the foregoing implementation manners, in another implementation manner of the fourth aspect, the current adjustment unit is specifically configured to: according to a current voltage of the battery, and a preset battery voltage value Corresponding relationship between the charging current values, adjusting the charging current of the power adapter to a charging current value corresponding to the current voltage of the battery.

In conjunction with the fourth aspect, or any one of the foregoing implementation manners, in another implementation manner of the fourth aspect, the communication unit is further configured to: use the fast charging mode to charge the mobile terminal in the power adapter Receiving, by the data line in the USB interface, the mobile terminal to send a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; and the power adapter is configured according to the power source The charging voltage of the adapter and the current voltage of the battery determine whether the contact of the USB interface is abnormal.

In the embodiment of the present invention, the power adapter does not blindly increase the output current for fast charging, but needs to receive the first instruction of the mobile terminal, and then can quickly charge the mobile terminal by using the fast charging mode, compared with the prior art. Improves the safety of the fast charging process.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic flow chart of a fast charging method according to an embodiment of the present invention.

2 is a schematic flow chart of a fast charging method according to an embodiment of the present invention.

FIG. 3 is a schematic block diagram of a mobile terminal according to an embodiment of the present invention.

4 is a schematic block diagram of a power adapter of an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

FIG. 1 is a schematic flow chart of a fast charging method according to an embodiment of the present invention. The method of FIG. 1 is applied to a mobile terminal that communicates with a power adapter through a universal serial bus (Universal Serial The Bus, USB) interface is connected, and the USB interface can be a normal USB interface or a micro USB interface. The power line in the USB interface is used to charge the mobile terminal, wherein the power line in the USB interface may be a VBus line and/or a ground line in the USB interface. The data line in the USB interface is used for communication between the power adapter and the mobile terminal, and the data line may be a D+ line and/or a D- line in a USB interface. The so-called two-way communication may refer to both the power adapter and the terminal. Interact with information. The mobile terminal supports a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode, for example, a charging current of a normal charging mode is generally less than 2.5 A, and charging in a fast charging mode The current can be greater than 3A,

The method of Figure 1 includes:

110. The mobile terminal sends a first instruction to the power adapter by using a data line in the USB interface, where the first instruction is used to instruct the power adapter to enable the fast charging mode.

It should be understood that before step 110, the mobile terminal may determine whether to perform fast charging according to the current battery power, the voltage of the battery, or the working state of the mobile terminal.

120. The mobile terminal receives a charging current corresponding to the fast charging mode from the power adapter, and charges a battery in the mobile terminal.

Optionally, as an embodiment, before the mobile terminal receives the charging current corresponding to the fast charging mode from the power adapter, before charging the battery in the mobile terminal, the method of FIG. 1 may further include: The mobile terminal sends a second instruction to the power adapter through a data line in the USB interface, the second instruction is used to indicate a charging voltage corresponding to the fast charging mode.

It should be understood that the charging voltage corresponding to the fast charging mode may be a charging voltage preset by the power adapter, or may be a charging voltage indicated by the mobile terminal by the second instruction. Specifically, the mobile terminal can determine the charging voltage corresponding to the fast charging mode according to its own operating parameters, such as the battery's power, voltage, temperature, and the like.

Optionally, as an embodiment, before the mobile terminal receives a charging current corresponding to the fast charging mode from the power adapter, before the battery in the mobile terminal is charged, the party The method further includes: the mobile terminal transmitting a third instruction to the power adapter through a data line in the USB interface, the third instruction being used to indicate a charging current corresponding to the fast charging mode.

It should be understood that the charging current corresponding to the fast charging mode may be a charging current preset by the power adapter, or may be a charging current indicated by the mobile terminal through the third instruction. Specifically, the mobile terminal can determine the charging current corresponding to the fast charging mode according to its own operating parameters, such as the battery's power, voltage, temperature, and the like.

Optionally, as an embodiment, the method of FIG. 1 may further include: when the power adapter uses the fast charging mode to charge the mobile terminal, the mobile terminal passes data in the USB interface. Transmitting, to the power adapter, a fourth command, the fourth command is used to indicate a current voltage of a battery in the mobile terminal, so that the power adapter adjusts a charging current according to a current voltage of the battery, or according to the The charging voltage of the power adapter and the current voltage of the battery determine whether the contact of the USB interface is abnormal.

Specifically, the power adapter can determine the impedance of the entire path according to the voltage drop between the output voltage of the battery and the obtained battery voltage. When the impedance of the path is greater than a preset threshold, it is determined that the interface of the USB is abnormal.

In the above, in conjunction with FIG. 1, a fast charging method according to an embodiment of the present invention is described in detail from the perspective of a mobile terminal. A fast charging method according to an embodiment of the present invention will be described below with reference to FIG. 2 from the perspective of a power adapter.

It should be understood that the interaction between the power adapter and the mobile terminal described on the mobile terminal side and related features, functions, and the like correspond to the description of the power adapter side, and the duplicate description is omitted as appropriate for brevity.

2 is a schematic flow chart of a fast charging method according to an embodiment of the present invention. The method of FIG. 2 is applied to a power adapter that is connected to a mobile terminal via a USB interface, a power cord in the USB interface is used for the power adapter to charge the mobile terminal, and a data line in the USB interface Used for communication between the power adapter and the mobile terminal, the power adapter supporting a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode, the method of FIG. include:

210. The power adapter receives a first instruction sent by the mobile terminal by using a data line in the USB interface, where the first instruction is used to instruct the power adapter to enable the fast charging mode.

220. The power adapter adjusts a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal.

Optionally, as an embodiment, before the power adapter adjusts a charging current to a charging current corresponding to the fast charging mode, before charging the mobile terminal, the method of FIG. 2 may further include: the power adapter passes The data line in the USB interface receives a second instruction sent by the mobile terminal, and the second instruction is used to indicate a charging voltage corresponding to the fast charging mode.

Optionally, as an embodiment, before the power adapter adjusts a charging current to a charging current corresponding to the fast charging mode, before charging the mobile terminal, the method of FIG. 2 may further include: the power adapter passes The data line in the USB interface receives a third command sent by the mobile terminal, and the third instruction is used to indicate a charging current corresponding to the fast charging mode.

Optionally, as an embodiment, the method of FIG. 2 may further include: when the power adapter uses the fast charging mode to charge the mobile terminal, the power adapter passes data in the USB interface Receiving, by the line, the mobile terminal sends a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; and the power adapter adjusts a charging current according to a current voltage of the battery in the mobile terminal.

Optionally, as an embodiment, the power adapter adjusts the charging current according to the current voltage of the battery in the mobile terminal, and may include: the power adapter according to a current voltage of the battery, and a preset battery voltage. Corresponding relationship between the value and the charging current value adjusts the charging current of the power adapter to a charging current value corresponding to the current voltage of the battery.

Optionally, as an embodiment, the method of FIG. 2 may further include: when the power adapter uses the fast charging mode to charge the mobile terminal, the power adapter passes data in the USB interface Receiving, by the line, the mobile terminal to send a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; and the power adapter is configured according to a charging voltage of the power adapter and a current voltage of the battery, It is determined whether the contact of the USB interface is abnormal.

The quick charging method according to an embodiment of the present invention is described in detail above with reference to FIGS. 1 through 2, and a mobile terminal and a power adapter according to an embodiment of the present invention will be described in detail below with reference to FIGS. 3 through 4. It should be understood that the mobile terminal in FIG. 3 can implement the steps performed by the mobile terminal in FIG. 1 to FIG. 2, and the power adapter of FIG. 4 can implement the steps performed by the power adapter in FIGS. 1 to 2, in order to avoid duplication. No longer described in detail.

FIG. 3 is a schematic block diagram of a mobile terminal according to an embodiment of the present invention. The mobile terminal 300 of FIG. 3 is connected to a power adapter through a USB interface, and a power line in the USB interface is used to charge the mobile terminal 300, and a data line in the USB interface is used for the power adapter and the mobile The terminal 300 performs communication, and the mobile terminal 300 supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode, and the mobile terminal 300 includes:

The communication circuit 310 is configured to send, by using a data line in the USB interface, a first instruction to the power adapter, where the first instruction is used to instruct the power adapter to enable the fast charging mode;

The charging circuit 320 is configured to receive a charging current corresponding to the fast charging mode from the power adapter to charge a battery in the mobile terminal 300.

Optionally, as an embodiment, the communication circuit 310 is further configured to send, by using a data line in the USB interface, a second instruction to the power adapter, where the second instruction is used to indicate that the fast charging mode corresponds to The charging voltage.

Optionally, in an embodiment, the communication circuit 310 is further configured to send, by using a data line in the USB interface, a third instruction, where the third instruction is used to indicate that the fast charging mode corresponds to The charging current.

Optionally, as an embodiment, the communication circuit 310 is further configured to pass through a data line in the USB interface during charging of the mobile terminal 300 by using the fast charging mode by the power adapter. The power adapter sends a fourth command, the fourth command is used to indicate a current voltage of the battery in the mobile terminal 300, so that the power adapter adjusts the charging current according to the current voltage of the battery, or according to the power adapter. The charging voltage and the current voltage of the battery determine whether the contact of the USB interface is abnormal.

4 is a schematic block diagram of a power adapter of an embodiment of the present invention. The power adapter 400 of FIG. 4 is connected to the mobile terminal via a USB interface, and a power cord in the USB interface is used for the power adapter 400 to charge the mobile terminal, and a data line in the USB interface is used for the power adapter 400 communicating with the mobile terminal, the power adapter 400 supporting a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the normal charging mode The charging current, the power adapter 400 includes:

The communication circuit 410 is configured to receive, by using a data line in the USB interface, a first instruction sent by the mobile terminal, where the first instruction is used to instruct the power adapter 400 to enable the fast charging mode;

The current adjustment circuit 420 is configured to adjust a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal.

Optionally, as an embodiment, the communication circuit 410 is further configured to receive, by using a data line in the USB interface, a second instruction sent by the mobile terminal, where the second instruction is used to indicate the fast charging mode. Corresponding charging voltage.

Optionally, as an embodiment, the communication circuit 410 is further configured to receive, by using a data line in the USB interface, a third instruction sent by the mobile terminal, where the third instruction is used to indicate the fast charging mode. Corresponding charging current.

Optionally, as an embodiment, the communication circuit 410 is further configured to receive, by the data line in the USB interface, the power adapter 400 is used to charge the mobile terminal by using the fast charging mode. The mobile terminal sends a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; and the current adjustment circuit 420 is specifically configured to adjust charging according to a current voltage of a battery in the mobile terminal. Current.

Optionally, as an embodiment, the current adjustment circuit 420 is specifically configured to: charge current of the power adapter 400 according to a current voltage of the battery, and a corresponding relationship between a preset battery voltage value and a charging current value. Adjusting the charging current value corresponding to the current voltage of the battery.

Optionally, as an embodiment, the communication circuit 410 is further configured to receive, by the data line in the USB interface, the power adapter 400 is used to charge the mobile terminal by using the fast charging mode. The mobile terminal sends a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; the power adapter 400 determines according to a charging voltage of the power adapter 400 and a current voltage of the battery. Whether the contact of the USB interface is abnormal.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in computer software and electronic hardware. Come together to achieve. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily within the technical scope disclosed by the present invention. Any changes or substitutions are contemplated as being within the scope of the invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

A fast charging method, characterized in that the method is applied to a mobile terminal, and the mobile terminal is connected to a power adapter through a universal serial bus USB interface, and a power line in the USB interface is used to charge the mobile terminal The data line in the USB interface is used for communication between the power adapter and the mobile terminal, and the mobile terminal supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the normal charging Mode of charging current, the method comprising:

Transmitting, by the mobile terminal, a first instruction to the power adapter by using a data line in the USB interface, where the first instruction is used to instruct the power adapter to enable the fast charging mode;

The mobile terminal receives a charging current corresponding to the fast charging mode from the power adapter to charge a battery in the mobile terminal.
The method according to claim 1, wherein said method further comprises: before said mobile terminal receives said charging current corresponding to said fast charging mode from said power adapter, for charging said battery in said mobile terminal :

The mobile terminal sends a second instruction to the power adapter through a data line in the USB interface, where the second instruction is used to indicate a charging voltage corresponding to the fast charging mode.
The method according to claim 1 or 2, wherein the method is performed before the mobile terminal receives a charging current corresponding to the fast charging mode from the power adapter to charge a battery in the mobile terminal Also includes:

The mobile terminal sends a third instruction to the power adapter through a data line in the USB interface, where the third instruction is used to indicate a charging current corresponding to the fast charging mode.
The method of any of claims 1-3, wherein the method further comprises:

And in the process of charging, by the power adapter, the mobile terminal by using the fast charging mode, the mobile terminal sends a fourth instruction to the power adapter through a data line in the USB interface, where the fourth instruction is used Determining a current voltage of a battery in the mobile terminal, so that the power adapter adjusts a charging current according to a current voltage of the battery, or determining the USB according to a charging voltage of the power adapter and a current voltage of the battery Whether the contact of the interface is abnormal.
A fast charging method, characterized in that the method is applied to a power adapter, and the power adapter is connected to a mobile terminal through a universal serial bus USB interface, the USB interface a power cord for the power adapter to charge the mobile terminal, a data line in the USB interface for the power adapter to communicate with the mobile terminal, the power adapter supporting a normal charging mode and fast charging a mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode, the method comprising:

The power adapter receives a first instruction sent by the mobile terminal by using a data line in the USB interface, where the first instruction is used to instruct the power adapter to enable the fast charging mode;

The power adapter adjusts a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal.
The method of claim 5, wherein the method further comprises: before the power adapter adjusts a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal, the method further comprising:

The power adapter receives a second command sent by the mobile terminal by using a data line in the USB interface, and the second instruction is used to indicate a charging voltage corresponding to the fast charging mode.
The method according to claim 5 or claim 6, wherein before the power adapter adjusts the charging current to the charging current corresponding to the fast charging mode to charge the mobile terminal, the method further includes:

The power adapter receives a third command sent by the mobile terminal by using a data line in the USB interface, and the third instruction is used to indicate a charging current corresponding to the fast charging mode.
The method of any of claims 5-7, wherein the method further comprises:

Receiving, by the power adapter, the mobile terminal to send a fourth instruction by using the fast charging mode to charge the mobile terminal, wherein the power adapter sends a fourth instruction by using a data line in the USB interface, where the fourth instruction is used Instructing a current voltage of a battery in the mobile terminal;

The power adapter adjusts a charging current according to a current voltage of a battery in the mobile terminal.
The method according to claim 8, wherein the power adapter adjusts the charging current according to the current voltage of the battery in the mobile terminal, including:

The power adapter adjusts a charging current of the power adapter to a charging current value corresponding to a current voltage of the battery according to a current voltage of the battery and a corresponding relationship between a preset battery voltage value and a charging current value.
The method of any of claims 5-9, wherein the method further comprises:

Receiving, by the power adapter, the mobile terminal to send a fourth instruction by using the fast charging mode to charge the mobile terminal, wherein the power adapter sends a fourth instruction by using a data line in the USB interface, where the fourth instruction is used Instructing a current voltage of a battery in the mobile terminal;

The power adapter determines whether the contact of the USB interface is abnormal according to a charging voltage of the power adapter and a current voltage of the battery.
A mobile terminal, wherein the mobile terminal and a power adapter are connected through a universal serial bus USB interface, wherein a power line in the USB interface is used to charge the mobile terminal, and a data line in the USB interface Used for communication between the power adapter and the mobile terminal, the mobile terminal supporting a normal charging mode and a fast charging mode, wherein a charging current of the fast charging mode is greater than a charging current of the normal charging mode, the mobile terminal include:

a communication unit, configured to send, by using a data line in the USB interface, a first instruction to the power adapter, where the first instruction is used to instruct the power adapter to enable the fast charging mode;

And a charging unit, configured to receive, from the power adapter, a charging current corresponding to the fast charging mode to charge a battery in the mobile terminal.
The mobile terminal according to claim 11, wherein the communication unit is further configured to send a second instruction to the power adapter through a data line in the USB interface, the second instruction is used to indicate the The charging voltage corresponding to the fast charging mode.
The mobile terminal according to claim 11 or 12, wherein the communication unit is further configured to send a third instruction to the power adapter through a data line in the USB interface, the third instruction is used to indicate The charging current corresponding to the fast charging mode.
The mobile terminal according to any one of claims 11 to 13, wherein the communication unit is further configured to pass the power adapter in the process of charging the mobile terminal by using the fast charging mode. a data line in the USB interface sends a fourth command to the power adapter, the fourth command is used to indicate a current voltage of a battery in the mobile terminal, so that the power adapter adjusts charging according to a current voltage of the battery Current, or determining whether the contact of the USB interface is abnormal according to a charging voltage of the power adapter and a current voltage of the battery.
A power adapter, wherein the power adapter is connected to a mobile terminal through a universal serial bus USB interface, and a power cable in the USB interface is used by the power adapter to charge the mobile terminal, the USB interface The data line in the power adapter and the The mobile terminal performs communication, and the power adapter supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode, and the power adapter includes:

a communication unit, configured to receive, by using a data line in the USB interface, a first instruction sent by the mobile terminal, where the first instruction is used to instruct the power adapter to enable the fast charging mode;

And a current adjustment unit configured to adjust a charging current to a charging current corresponding to the fast charging mode to charge the mobile terminal.
The power adapter according to claim 15, wherein the communication unit is further configured to receive, by using a data line in the USB interface, a second instruction sent by the mobile terminal, where the second instruction is used to indicate The charging voltage corresponding to the fast charging mode.
The power adapter according to claim 15 or 16, wherein the communication unit is further configured to receive, by using a data line in the USB interface, a third instruction sent by the mobile terminal, where the third instruction is used Indicates a charging current corresponding to the fast charging mode.
The power adapter according to any one of claims 15-17, wherein the communication unit is further configured to pass the power adapter during charging of the mobile terminal by using the fast charging mode The data line in the USB interface receives the mobile terminal to send a fourth instruction, where the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; and the current adjustment unit is specifically configured to be used according to the mobile terminal The current voltage of the battery is adjusted to the charging current.
The power adapter according to claim 18, wherein the current adjustment unit is configured to: according to a current voltage of the battery, and a correspondence between a preset battery voltage value and a charging current value, the power adapter The charging current is adjusted to a charging current value corresponding to the current voltage of the battery.
The power adapter according to any one of claims 15 to 19, wherein the communication unit is further configured to pass the power adapter during charging of the mobile terminal by using the fast charging mode The data line in the USB interface receives the mobile terminal to send a fourth instruction, the fourth instruction is used to indicate a current voltage of a battery in the mobile terminal; and the power adapter is based on a charging voltage and a location of the power adapter Describe the current voltage of the battery to determine whether the contact of the USB interface is abnormal.